Anniversary of Tom Simpson's death

Forty years ago today Tom Simpson died on Mont Ventoux, while competing in the Tour De France. Aged 29, he had been an Olympic silver medalist, World Champion, and the first British rider to wear the yellow jersey in the Tour De France. On the cover of Tony Hadland's excellent book The Moulton Bicycle, Simpson is photographed test riding a Moulton Speed at Herne Hill. On an external wall of the Hall, Alex Moulton's home in Bradford on Avon, there is a memorial plaque depicting the same scene. Today, the spot where Mr Tom died on Mont Ventoux is marked by a memorial, where cyclists still leave water bottles, hats, inner tubes or whatever they have spare, as a mark of respect to the legend. The British cyclist David Millar threw his hat to the monument while competing in the Tour a few years back, showing whose wheels he was following. Does anyone have any further details on Simpson's Moulton connections? If so I'd love to hear them.